if 28 lamps use the same power source, find the number of socket with 4-pin plug that they at least need.?
if 28 lamps use the same power source, find the number of socket with 4-pin plug that they at least need.
- SlowfingerLv 61 month agoFavorite Answer
What is the amperage rating of the socket? 32A maybe? What power is single lamp?
Divide Watts of single lamp with phase voltage (voltage between any phase and neutral). That's amperage per 1 lamp. Multiply by 28 to get total amperes. Compare the result with rating of the socket.
Grid is 3-phase 220/380 V
28 lamps 100W each.
amperage of 1 lamp is 100/220=0.45A
Total amperage 28*0.45=12.6 A
In this example one 16 A socket is sufficient.
Hope this helps.
- PhilomelLv 71 month ago
I don't know what socket you are referring to with 4 pin plug. Most lamp sockets have two contacts not 4 unless it is a 6 way lamp with three filaments?