Whats wrong with this pic
Mixed Voltages
We are currently remodling a commercial building that has both 277/480 and 120/208 voltages which is common. Although I am use to installing the two voltages in different boxes and raceways never mix the two.
Although this building is old and looks to be remodled alot there is quite a bit of jboxes and conduits sharing the two voltages. What if any could be a trouble I could be facing down the line.
I need to install a lighting contactor that wasnt in the plan just added yesterday and it has a 120v coil w/277-480 contacts.
Here's the real question can I get away with pulling a 120v three way- fourway- threeway through the existing pipe which has 277v to operate the coil?
Although this building is old and looks to be remodled alot there is quite a bit of jboxes and conduits sharing the two voltages. What if any could be a trouble I could be facing down the line.
I need to install a lighting contactor that wasnt in the plan just added yesterday and it has a 120v coil w/277-480 contacts.
Here's the real question can I get away with pulling a 120v three way- fourway- threeway through the existing pipe which has 277v to operate the coil?
1 - 5 of 5 Posts
Two issues off hand.
1. Wrong voltage to equipment, damages equipment.
2. Crossed neutrals resulting in ground current/EMF issues.
Then there is safety are the different systems identified by different colors, including the neutrals.
1. Wrong voltage to equipment, damages equipment.
2. Crossed neutrals resulting in ground current/EMF issues.
Then there is safety are the different systems identified by different colors, including the neutrals.
no this job is a spaghetti bowl. reds,whites,blacks,oranges ect.
I had to go thru to each Jbox and identify voltages in each, color coding was not used in the old installation all new installations are now seperated.
i need to install a lighting contactor with a 120v coil, should I pipe a new run for the 120v coil 3way system.
The grids up and I need an fast and efficient way to switch this system. Ceiling Inspection is Monday afternoon.
I had to go thru to each Jbox and identify voltages in each, color coding was not used in the old installation all new installations are now seperated.
i need to install a lighting contactor with a 120v coil, should I pipe a new run for the 120v coil 3way system.
The grids up and I need an fast and efficient way to switch this system. Ceiling Inspection is Monday afternoon.
thanks for all your suggestions
1 - 5 of 5 Posts
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