Can I use 100A SE cable to feed a disconnect inside a warehouse about 150 ft away? SPDSTS@aol.com
100 Amp SE Cable?
- Thread starter spdsts
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luke warmwater
Senior Member
Re: 100 Amp SE Cable?
By the literal text in your question, I will give you a maybe .
But there is just too little information to give you a direct yes/no answer.
By the literal text in your question, I will give you a maybe .
But there is just too little information to give you a direct yes/no answer.
speedypetey
Senior Member
- Location
- Hudson Valley, NY
Re: 100 Amp SE Cable?
I'd say SER is a probable yes.
Definitely need a tad more info.
I'd say SER is a probable yes.
Definitely need a tad more info.
pierre
Senior Member
- Location
- Westchester County, New York
Re: 100 Amp SE Cable?
If the disconnect has one hot, a neutral and an equipment ground, yes you can. If the disconnect has two hot conductors, no you cannot use SE cable, as you will be required to have two hot conductors, an insulated neutral and an equipment ground conductor, which SE cable does not have.
Pierre
If the disconnect has one hot, a neutral and an equipment ground, yes you can. If the disconnect has two hot conductors, no you cannot use SE cable, as you will be required to have two hot conductors, an insulated neutral and an equipment ground conductor, which SE cable does not have.
Pierre
luke warmwater
Senior Member
Re: 100 Amp SE Cable?
Pierre,
Type SE in itself is not enough info for a correct answer.
By definition, SE cable can be 'a single conductor or a multi cunductor assembly...'
Is it SE U , SE R ???
SER, as speedypetey replied is a probable yes.
Why would he have to have an 'insulated neutral'?
We don't know what the wire is feeding.
Pierre,
Type SE in itself is not enough info for a correct answer.
By definition, SE cable can be 'a single conductor or a multi cunductor assembly...'
Is it SE U , SE R ???
SER, as speedypetey replied is a probable yes.
Why would he have to have an 'insulated neutral'?
We don't know what the wire is feeding.
Re: 100 Amp SE Cable?
The 100 Amp disconnect is 3 phase 208 volt.
Here is what my buddy wants:
I have to put in
4 - 30 amp 3 phase 208 volt disconnects each between 80, 100, 190 and 200 ft from main panel
2 - 100 amp 3 phase 208 volt disconnects each about 150 and 210 ft from main panel
1 - 150 amp 3 phase 208 volt disconnect about 170 ft from main panel
The guy that I am doing this for wants to run romex to the diconnects, using pipe to go up and down the walls.
My questions are:
Do they make romex large enough for the 100 amp and the 150 amp?
If so, with the distance of these runs what size for do I have to use for each?
30 amp - 80 ft
30 amp - 100 ft
30 amp - 190 ft
30 amp - 200 ft
100 amp - 150 ft
100 amp - 210 ft
150 amp - 170 ft
If I can run romex to these, can I just put an emt connector on the pipe at the top with a plastic bushing and push the wire down the pipe or do I need a emt connector with a threaded connector and a romex connector at the top?
The 100 Amp disconnect is 3 phase 208 volt.
Here is what my buddy wants:
I have to put in
4 - 30 amp 3 phase 208 volt disconnects each between 80, 100, 190 and 200 ft from main panel
2 - 100 amp 3 phase 208 volt disconnects each about 150 and 210 ft from main panel
1 - 150 amp 3 phase 208 volt disconnect about 170 ft from main panel
The guy that I am doing this for wants to run romex to the diconnects, using pipe to go up and down the walls.
My questions are:
Do they make romex large enough for the 100 amp and the 150 amp?
If so, with the distance of these runs what size for do I have to use for each?
30 amp - 80 ft
30 amp - 100 ft
30 amp - 190 ft
30 amp - 200 ft
100 amp - 150 ft
100 amp - 210 ft
150 amp - 170 ft
If I can run romex to these, can I just put an emt connector on the pipe at the top with a plastic bushing and push the wire down the pipe or do I need a emt connector with a threaded connector and a romex connector at the top?
- Location
- Massachusetts
Re: 100 Amp SE Cable?
That is a lot better on the info, I also checked and saw your profile says electrician.
If this building is of a type acceptable to run NM you can run SE of the right type too.
The largest NM is 2 AWG copper, so for the largest disconnect you would need to use SE.
You asked about what size for the distance, that would be better if based on the connected load not the disconnect size.
I will give you some figures for less than 5% voltage drop at 80% of the disconnect sizes.
30 amp - 100 ft 10 AWG CU @ 26 amps
30 amp - 190 ft 8 AWG CU @ 26 amps
30 amp - 200 ft 8 AWG CU @ 26 amps
100 amp - 150 ft 3 AWG CU 1 AWG AL @ 80 amps
100 amp - 210 ft 3 AWG CU 1 AWG AL @ 80 amps
150 amp - 170 ft 1/0 CU 3/0 AL @ 120 amps
On the largest runs you may want to use AL for cost.
Also if the building is not of the type for NM you could get copper MC in all the sizes needed.
I would say yes you need a connector not just a bushing.
You will not be able to run the larger stuff alone.
Good luck, hope this helps.
That is a lot better on the info, I also checked and saw your profile says electrician.
If this building is of a type acceptable to run NM you can run SE of the right type too.
The largest NM is 2 AWG copper, so for the largest disconnect you would need to use SE.
You asked about what size for the distance, that would be better if based on the connected load not the disconnect size.
I will give you some figures for less than 5% voltage drop at 80% of the disconnect sizes.
30 amp - 100 ft 10 AWG CU @ 26 amps
30 amp - 190 ft 8 AWG CU @ 26 amps
30 amp - 200 ft 8 AWG CU @ 26 amps
100 amp - 150 ft 3 AWG CU 1 AWG AL @ 80 amps
100 amp - 210 ft 3 AWG CU 1 AWG AL @ 80 amps
150 amp - 170 ft 1/0 CU 3/0 AL @ 120 amps
On the largest runs you may want to use AL for cost.
Also if the building is not of the type for NM you could get copper MC in all the sizes needed.
I would say yes you need a connector not just a bushing.
You will not be able to run the larger stuff alone.
Good luck, hope this helps.
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