LIGHTING
The evaluation needs to take into account any existing loads
CALCULATING COSTS
that may be operating at the same time as the floodlighting. 1 At the feasibility project stage, con-
The predicted future load can then be calculated
tact the electricity company with an
enquiry letter, stating:
P
• The name and telephone number
I
C
: T
of a key contact person
I
R
C
• The site address, including the
8
3
/
I
S
postcode
T
O
C • The type of supply – single or three
K
.
C
O phase (usually above 20Kva will al-
M
ways require a three-phase supply)
• The capacity required (Kva)
• State that the enquiry is for a
permanent supply
• The nature of the load – ie
clubhouse and floodlighting
• Enclose the location plan
• Request a budget quote and pro-
posed cable route diagram
2 When a formal quotation is required:
Complete the electricity company
forms, which will repeat the content
above and send the design fee if ap-
plicable – only the formal version can
be accepted to instruct the company
to proceed.
3 Review either form of the electricity
company quote.
There will be items excluded for you
to have carried out in advance of the
works on-site by the company and
strict standards to achieve. These ex-
It’s important to know which elements of the development require a power supply clusions and extra works described in
the quote will and do apply to your
Floodlighting isn’t 100 per cent ef- the site. You will need to identify the project and they must be clearly un-
ficient, when using the most popular most cost-effective location for the new derstood and priced.
high-pressure discharge lamps (ie metal supply. This will either be in a building 4 Contact an electricity supplier re-
halide or sodium). Depending on the on-site (ie a clubhouse) or if this is a long garding the type of metering and
make, the combined fitting and lamp as- way from the source of supply it can be the costs of installation.
sembly (the luminiare), will have a power positioned in an intake enclosure on the The supplier is the firm from which
factor associated with it. The supply au- site boundary. you buy your electricity and to which
thorities expect the equipment which is The aim is to minimise the work and you will pay the bill. Your supplier
connected to operate as close to unity as therefore the cost of the new supply will offer a tariff agreement which
possible and most of the quality fittings works by the statutory utility as, being identifies standing charges,
available will have a power factor of 0.9. in a monopoly position, these costs are maximum demand and the unit
Given this source data and the pre- outside the developer’s control. cost of energy use. These are long-
dicted load from the lighting designer term revenue costs and need to be
– already expressed in Kva – the total How to proceed? included in operating budgets.
load can be established in the terms Place three sets of instructions with 5 From items 3 and 4 – identify costs
needed for an approach to the electric- • The electricity company for any attendance works
ity company – the utility responsible • The electricity supplier 6 Create a Scope of Works document –
for the network and supply cables into • The contractor for attendance works the employer’s requirements for the
buildings or intake enclosures. Monitor site works and attendance for attendance works.
the installation and connection through 7 Get a quotation for the attendance
What else will the electricity to the energisation of the supply. works which are needed
company require? 8 Collate items 3, 4 and 7 to identify
The company will need a location plan Tony Hill is principal at mechanical the full cost of the new supply.
to show the position of the existing or and electrical consulting engineers 9 Include the value established in item
proposed new supply point on-site. This Ayrlect Associates. He has been in 8 in the overall project cost plan.
can be created from a digital picture of practice for the past 28 years
46 Read Sports Management online
sportsmanagement.co.uk/digital Issue 3 2009 © cybertrek 2009
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84