AQUA SPAS Spa Installationsanleitung PDF herunterladen (Seite 6)

Aqua Spas Gold TV Spa Installation Guide

Aqua Spas 6

Electrics

You don’t need a permanent water supply

for a hot tub or garden spa but you will

need a suitable electrical supply to run the

tub. Hot tubs have a specific section in the

16th Edition IEE (Institute of Electrical

Engineers) Regulations and fall into the

same category as swimming pools.

When appointing an electrician to prepare

your hot tub electrics check that they are

suitably qualified electrician. Do not

attempt to install hot tub electrics yourself

if you are not a fully qualified electrician.

The Government introduced a new law in

January 2005, which demands that most

electrical work in UK households is only

carried out by a competent person. This

law means that Electrical safety

requirements have been included in a new

Part P of the Building Regulations.

The law states that anyone carrying out

fixed electrical installations in households

in England and Wales must ensure that

electrical installations are:

Designed and installed to afford

appropriate protection against mechanical

and thermal damage, and so that they do

not present electric shock and fire hazards

to people

Suitably inspected and tested to verify that

they meet the relevant equipment and

installation standards.

It is now against the law to have a new

circuit installed in your home without

having it inspected and tested to ensure it

is Part P compliant. This can be achieved

in 2 ways:

1. Appoint an electrical contractor who is

registered with a competent person

scheme.

2. Appoint someone who is not Part P

registered but contact you local

authority’s Building Control

Department first. The work will have

to be inspected and tested by your local

authority before it can be signed off.

There will be a charge for this service.

Either way you will receive a Part P

certificate after the hot tub electrical

supply work is completed. From 2007,

these will need to be kept on file and

presented if you ever sell your house as

part of the new home information packs

(HIPS).

Your Spa Dealer can liaise with your

electrical contractor regarding the exact

specification for your spa but it must meet

the following specification:

The hot tub must be hard wired on its own

fused spur back to your household

consumer unit. (i.e. the tub should not be

sharing a supply with any other

appliances)

The hot tub should be protected by a

sufficiently rated MCB (mains circuit

breaker) and should cover the maximum

amperage pull of the spa PLUS 25% to

allow for brake torque (i.e. the extra rush

of current when pumps are first started.)

So a hot tub that has a maximum current

draw of 20 amps should be fitted with a

25amp MCB.

The hot tub should also be protected

against earth faults by an RCD (Residual

Current Device) This is a trip switch

which prevents danger of electric shock

from damaged or waterlogged cables and

connections. A suitably rated 30mA RCD

is recommended.

Outdoor cabling should be protected from

damage by either laying protective ducting

(pvc pipe) below ground or by using Steel

Wired Armoured (SWA) cable. Your

electrician will calculate the size of cable

required depending on the loading and the

distance from the mains supply. 6mm2 3-

core SWA cable is perfectly suitable in

most cases but always consult an

electrician first.

An IP65 45amp Rotary Isolation Switch is

also recommended so that the hot tub can

be isolated outdoors in an emergency or

for service work. This is simply a rotary

on/off switch but should be sited more than

2 metres away for the hot tub so that users

cannot be in the spa whilst operating the

switch.

The hot tub supply can then be directly

hard wired into the load box inside the

spa. Waterproof gland packs should be

used to prevent ingress of water on all

outdoor electrical connections (2 at the

isolation switch and 1 inside the hot tub)

Ensure that all earth cables are clearly

colour coded with green/yellow insulating

tape or earth sleeve.

Once the hot tub is filled with water and

the electrical supply is installed, your hot

tub installation team should commission

the hot tub and check that everything is

fully operational before “handing over” to

you with a thorough training of how all of

the hot tub features work.

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