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Lighting

Household Power Distribution – Do’s & Don’ts!

He-Man "I have the power"

Today we are here to talk about household power distribution. In a home, it’s very important to understand the etiquette of breakers, circuit boxes, and your power needs.

Household Power Cinematography filmmaker film movies tv shooting DP lights

This is Eric Forand, my gaffer. We worked on a movie together and a few commercials. He’s going to take you through some do’s and don’ts of working in a household environment.

Eric and I discuss household power distribution

Household Power Cinematography filmmaker film movies tv shooting DP lights

Eric gaffed “The Babysitter” for me

Household Power Cinematography filmmaker film movies tv shooting DP lights

BTS of the lit set

Eric Forand:

The first thing you’ll want to do is make a map of the place. You can’t just plug lights in anywhere you want because you’ll very quickly overload household circuits. The best way to make a map is by flipping breakers on and off.

Quick Tip: If your household breakers aren’t already labelled at your location, do so. Label each breaker according to it’s location. For example, “Kitchen” or “Garage/Basement.” 
This will save you time on the day when a breaker trips and you need to figure out which circuit it’s on. Labeling them will tell you exactly which one(s) switched off.

Household circuits are generally only 15-20 amps and, in total, you usually only have anywhere from 60-100 amps in the entire house.

You need to figure out where the circuits are in the house. There are a few good ones to use. One good one is a dryer circuit which uses more power and pull around 30 amps on the circuit.

There are 220V plugs on dryers. They are similar to our genny connectors here. The dryer connectors have 4 prongs on them. You have a ground and a neutral and then a hot and a hot. You do need to build an adaptor that eliminates one of the hots. You separate the hots out so you have 2 hot connectors on the end of that. That way, you can access all 30 amps.

Household Power Cinematography filmmaker film movies tv shooting DP lights

A dryer connector is similar to this genny connector

Shane Hurlbut, ASC:

Back in the day, when I was doing a lot of music videos, we made our own connectors that we could tie into these dryer circuits. I was maxing out homes all over in my music video days of the 90s.

Some of Shane’s music videos

Some of them we’d keep 220, fire up the 4k par, and split those leads off.

A lot of times houses are wired where literally 9 plugs in a room will be on just 1 circuit.

Household Power Cinematography filmmaker film movies tv shooting DP lights

Most houses are wired so that all outlets in that room are on one circuit

Eric:

Almost all the time.

Shane:

Yeah, most of the time. You want to find that out because plugging into one side of the room and then going over to the other side of the room and plugging in will not necessarily mean you’re using different circuits. You’re going to end up blowing the breaker.

Household Power Cinematography filmmaker film movies tv shooting DP lights

A map of the circuits in a house

Eric:

Most of our lights will fill a circuit. Or, if you have 3 Tweenies, you can put 3 Tweenies on a circuit. We will fill a circuit very quickly with the jobs and lights we’re using.

Household Power Cinematography filmmaker film movies tv shooting DP lights

A Tweenie is a 650W fresnel

Shane:

Let’s talk about things to use for household distribution.

Eric:

Your household distribution situation really just consists of a few simple things. You have 25 and 50 foot stingers and then our distribution boxes. Our household distro box is simply a cube tap! It splits the stinger into 3 different ports.

Household Power Cinematography filmmaker film movies tv shooting DP lights

25 and 50 foot stingers

Household Power Cinematography filmmaker film movies tv shooting DP lights

Our household power distro box is just a cube tap

Nowadays, we have so many different things on set that requires power. Things like video village, for example, requires multiple connections. We can put that all on one stinger directly from the power source and break it out with a cube tap near video village for more ports.

Video village

Shane:

And there’s also a ground lifter!

Household Power Cinematography filmmaker film movies tv shooting DP lights

A ground lift adapter

 

Eric:

The ground lifter is for New York!

A ground lifter is for when you need to plug a 3 prong plug into a 2 prong outlet or plug. You’ll find these 2 prong outlets in a lot of older properties that were built in the 20s and whatnot. They also have much older wiring.

Household Power Cinematography filmmaker film movies tv shooting DP lights

A ground lift will convert a 3 prong plug into a 2 prong plug

Household Power Cinematography filmmaker film movies tv shooting DP lights

An older outlet with only 2 prongs

Household Power Cinematography filmmaker film movies tv shooting DP lights

Older wiring can deteriorate and not work as effectively

It’s actually not dangerous to have a ground. The little metal part of the ground lifter is supposed to touch the metal place of the outlet and ground it out. But wall plates are usually plastic these days so it doesn’t really ground it. Not grounding really isn’t dangerous, but it’s not the way to go. If you can use a grounded circuit, then use a grounded circuit.

Shane:

LED technology gives us the ability to use Arri Skypanels and Kino Flos. A lot of this LED technology has really opened up the possibility of using household circuitry with some bigger lights.

Household Power Cinematography filmmaker film movies tv shooting DP lights

Only resort to power-hungry lights when you need them

Eric:

Totally. A Skypanel is only like 400 or something Watts.

Also, choosing your lights wisely when you’re in a household power situation is good. You don’t want power-hungry things like 4ks. You want things that aren’t power-hungry like a Skypanel.

Shane:

Yeah, smaller wattages that are below 20 amps in power. This includes an M18 or a 800W Joker. These are lights that, from an HMI standpoint, you’ll be able to power off a household circuit.

Household Power Cinematography filmmaker film movies tv shooting DP lights

An Arri M18 is one of the smaller HMIs in the lineup

Household Power Cinematography filmmaker film movies tv shooting DP lights

An 800W Joker HMI Light

Household Power Cinematography filmmaker film movies tv shooting DP lights

A 400W Joker HMI Ligh

Eric:

I have to say that when working with an M18 on a household circuit it’s great to work with 1200W globes instead of the 1800W globes. You can actually put the 1.2K globe in that fixture. I have to say that the M18 will trip a lot of household circuits. They are rated at 20 amps, but if the circuit breaker is really old then they get a little soft. That means they trip a little under their rated amperage and an M18 will trip them off every time.

Household Power Cinematography filmmaker film movies tv shooting DP lights

When working with M18s be sure to pack a 1200W globe with it as well

I usually keep the 1800W globes in the M18 but I also have a few 1200W globes on the truck in case we run into that issue. We can just switch globes and keep shooting.

Household Power Cinematography filmmaker film movies tv shooting DP lights

A 1200W globe and an M18 light

Shane:

One final thing to note about household power is that when an HMI fires up it exceeds the amperage it would usually trim out at and then returns to its rated amperage as it warms up.

Household Power Cinematography filmmaker film movies tv shooting DP lights

Striking a light during the “Moonlight Series” shoot

Household Power Cinematography filmmaker film movies tv shooting DP lights

Upon striking the HMI will briefly exceed its amperage

Eric:

An M18 will spike to about 25 amps on strike. It’s just for a split second, but if the breaker’s a little soft then it’ll kick right off. The 1200 globe spikes at about 18 amps. So that won’t kick the breaker off.

Shane:

Let’s recap what we’ve learned about household power distribution:

  • In a home it’s very important to understand the etiquette of breakers, circuit boxes and your power needs.
  • You’ll need to figure out where your circuits are in the house. Household circuits are generally only 15-20 amps and in total you usually only have anywhere from 60-100 amps in the entire house. Make a map of your house circuitry.
  • Distribution for household power requires two simple things: stingers and cube taps.
  • LED technology has really opened up the possibility of using household circuitry with some bigger lights. Fixtures like Arri Skypanels and Kino Flos are great for household power use.
  • When working with an M18 on a household circuit it’s great to work with 1200W globes instead of the 1800W globes since most houses run 15 amp circuits.

If you want to learn more about power, check out Portable Generator Etiquette:

Household Power Cinematography filmmaker film movies tv shooting DP lights

 

Be fearless in your filmmaking. Join Shane’s Inner Circle today.

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July 12, 2017/by Shane Hurlbut, ASC
Tags: Blueshape, Cinematography, Director of Photography, Film Education Online, filmmaker, filmmaking, Flanders Monitors, Freefly, lighting, power distribution
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https://www.filmmakersacademy.com/wp-content/uploads/2017/07/i-have-the-power.jpg 500 500 Shane Hurlbut, ASC https://www.filmmakersacademy.com/wp-content/uploads/2021/10/Filmmakers-Academy-Filmmaking-Courses.svg Shane Hurlbut, ASC2017-07-12 09:26:002022-08-06 04:21:23Household Power Distribution – Do’s & Don’ts!
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1 reply
  1. Robert Render Harrison
    Robert Render Harrison says:
    July 19, 2017 at 4:46 PM

    Good practical advice, as always from you Shane!
    Once I was lighting inside a cathedral meeting hall; everything ready for the ‘off’ and the lights all died
    The building electrician reset the breaker.
    Five minutes later, lights off again.
    My reconnaissance of the passageway around the hall revealed a church group with electric coffee/tea urns plugged into the back of the wall of ‘my’ hall.
    Naturally, they were on the same circuit!
    And those urns use about as much power as a 650 watt light, maybe more.
    I ran them a cable from another room. Problem solved.

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