Voltages

[ebee]

good debate I`m pleased with the answers.
It shows some thought here.
Another thought - why are voltages classifications higher at DC than AC?
Example Low voltage = 1000v AC & 1600v DC & Extra low = 50 V AC & 120v DC (in the regs)
Actually not equal but not exceeding

LV DC is 120-1500V

Correct, sorry typo error not 1600 is 1500 (must have been thinking of the 600/900 to earth as well

 

[ban-all-sheds]

50v DC supplied down the lines.

Yo. But you try connecting a low-impedance load across it, e.g. a lamp, and see what happens to the voltage...

but the current still scares me!

Why? Just because a 50V supply is capable of delivering huge currents it doesn't mean that it will if you put yourself in the circuit.

 

[ebee]

Another thought - why are voltages classifications higher at DC than AC?
Example Low voltage = 1000v AC & 1600v DC

What's the peak-peak value of 1000V RMS?

I like your thinking BAN

 

[ebee]

50v DC supplied down the lines.

Yo. But you try connecting a low-impedance load across it, e.g. a lamp, and see what happens to the voltage...

but the current still scares me!

Why? Just because a 50V supply is capable of delivering huge currents it doesn't mean that it will if you put yourself in the circuit.

Absolutely.

There again if a theoretical 10kV supply is only capable deliver 1 micro amp max it would not be dangerous.

 

[Big_Spark]

BAS..thanks for spotting the typo..The perils of posting in haste with a hang-over!!

 

[Lectrician]

50v DC supplied down the lines.

Yo. But you try connecting a low-impedance load across it, e.g. a lamp, and see what happens to the voltage...

but the current still scares me!

Why? Just because a 50V supply is capable of delivering huge currents it doesn't mean that it will if you put yourself in the circuit.

Current is the scary thing - drop a spanner across those busbars and you would certainly know it

I am aware of ohms law BAS

 

[Spark123]

I would think dropping a spanner across 1 cell would be bad enough (approx 2.2v).

 

[ban-all-sheds]

BAS..thanks for spotting the typo..The perils of posting in haste with a hang-over!!

You should definitely take more water with it.....